The promoter regions of the BnGR2R3-MYB genes, 1,000 bp genomic DNA upstream sequences of each of the 105 BnGR2R3-MYB were selected, and the cis-elements predicted using PlantCare (http://bioinformatics.psb.ugent.be/web tools/plantcare/html/). Response class elements such as light-responsive, plant growth, stress-responsive and phytohormone-responsive were filtered and the cis-acting elements visualized in TBtools, and displayed with a heatmap. Following blasting in BLASTP against Swissport database, functional annotation of BnGMYB proteins was performed in Blast2GO Tool and subsequent mapping Gene Ontology (GO) terms, and visualization with R ggpolt2.
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